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RISK MANAGEMENT AND USE OF FINANCIAL INSTRUMENTS (Details) - USD ($) $ in Thousands |  | 12 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Jan. 24, 2019 | Dec. 31, 2021 | Dec. 31, 2019 | Dec. 23, 2021 | Dec. 31, 2020 | Dec. 24, 2018 | Apr. 04, 2017 | Dec. 17, 2013
Derivative financial instruments |  |  |  |  |  |  |  |
Settlement of hedge transactions |  |  | $ 807 |  |  |  |  |
Amount estimated to be reclassified as an increase to interest expense |  | $ 100 |  |  |  |  |  |
Loss Reclassified from Accumulated OCI into Income |  | $ 100 |  |  |  |  |  |
CubeSmart, L.P. and Subsidiaries |  |  |  |  |  |  |  |
Derivative financial instruments |  |  |  |  |  |  |  |
Settlement of hedge transactions |  |  | $ 807 |  |  |  |  |
Senior notes 4.375% due December 15, 2023 |  |  |  |  |  |  |  |
Derivative financial instruments |  |  |  |  |  |  |  |
Senior notes, principal amount | $ 300,000 |  |  |  | $ 300,000 |  |  |
Interest rate (as a percent) | 4.375% | 4.375% |  | 4.375% |  |  | 4.375% | 4.375%
Designated as an accounting hedge | Cash flow | Interest rate swap |  |  |  |  |  |  |  |
Derivative financial instruments |  |  |  |  |  |  |  |
Notional Amount |  |  |  |  |  | $ 150,000 |  |
Settlement of hedge transactions | $ 800 |  |  |  |  |  |  |

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